ICD-10-CM > S00-T88 > S80-S89 > S83 > S83.2 > S83.22 S83.22 Peripheral tear of medial meniscus, current injury Non-Billable/Non-Specific Codes S83.221Peripheral tear of medial meniscus, current injury, right kneeS83.221A..., initial encounterS83.221D..., subsequent encounterS83.221S..., sequelaS83.222Peripheral tear of medial meniscus, current injury, left kneeS83.222A..., initial encounterS83.222D..., subsequent encounterS83.222S..., sequelaS83.229Peripheral tear of medial meniscus, current injury, unspecified kneeS83.229A..., initial encounterS83.229D..., subsequent encounterS83.229S..., sequela